House mice are introduced commensal rodents in South Carolina, and NatureServe’s SNA rank, not applicable, reflects that introduced species don’t receive a state conservation status. The record leans toward GBIF (75 of 80 records), meaning trapping and specimen collection, not people spotting mice, accounts for most of what’s documented here.
January alone accounts for 56 of the 80 records, a striking 70 percent of the entire year’s total, a dramatic spike that plausibly reflects one large concentrated trapping effort that winter rather than any real seasonal explosion in mouse activity, since house mice breed indoors year-round regardless of outside conditions.




